Marciano never lost a fight. 49-0 43 knockouts.
That is fine, he was also a freak as you put it. I really don't think you comparing yourself to him is a good idea. Furthermore, boxing and integrity shouldn't even be used in the same sentence. Rankings and fights can be fixed.
Anyways, that isn't the point here. I don't know you, so I can't say what you are capable of, however, odds are Marciano was better than both you and DA. However, when comparing two athletes of equal skill in the ring, and you put a 240lb fighter against a 150lb fighter, the smart money is on the bigger man.
My posts weren't intended as a flame, so if they were interpreted as such, I am sorry. You have enough to handle here without arguing with me. If you do actually fight DA, don't write him off. Regardless of what you believe to be true, assume he is dangerous, give him some respect in the ring and things will go better than if you go in assuming he is a bitch and that the fight will be a cakewalk.
Anyways, best of luck to you in this.
P.S. I just read your other post. My ideas aren't stupid. I have seen too many fights in my life to assume a smaller man will beat a bigger one. I will just have to agree to disagree with you on this point and wish you luck. Take care.